Snap disk type switch
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United States of America Patent
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-
Mar 29, 1994
Grant Date -
N/A
app pub date -
Apr 14, 1992
filing date -
Apr 19, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pushbutton switch having a frustoconical switch cap of plastic, which acts as a restoring element, is proposed, which switch cap permits a very exact switching operation in comparison with known switch caps of rubber or silicone. In order to achieve optimum switching characteristics with defined switching displacements and forces, a thermoplastic elastomer is used which, as a block copolymer, has special properties regarding the flexibility of the switch cap. In this case, the material selection and dimensions of the switch cap determine the special properties of the pushbutton switch.
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